Nut-lock.



D. S. MARPLE.

NUT LOCK.

` AFP IIIIIIIIIIIIII AR. 9 1 9 1 2. 1,051,246 Patented Jan.21, 1913.

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UNITED STATES PATENT OFFIOE.

DAVID S. MARPLE, OF OSBOBINE, KANSAS.

NUT-LOCK.

To all whom it may concern:

Be it known that I, DAVID S. MARPLE, a citizen of the United States, residing at Osborne, in the county of Osborne and State of Kansas, have invented new and useful Improvements in *Nut-Locks, of which the following' is a specification.

This inventon relates to nut looks and the obj ect of the invention is to provide a simple and eflicient device of this character whereby the nut may be effeotually locked to the bolt so as to prevent accidental unscrewing therefrom.

Further objects of this invention will appear as the following specific description is read in connection with the accompanying drawing, which fo rms a part of this application, and in which Figure l is a side elevation. Fig. 2 is a top plan View. Fig'. 3 is a section on the line 3-3 of F ig. 2. Fig. 4: is a Similar section on the line 4-4 of Fig. 2. Fig. 5 is a detail side elevation of the pin.

Referring` more particularly to the drawng, 1 represents a bolt which is threaded at one end, as shown at 2, and adjustably mounted thereon is a nut 3 which is provided with a plurality of longitudinally disposed passages 4 arranged at diametrically opposite corners to receive the Connecting pins 5 which are slidably mounted in the apertures and which are headed up to prevent disengagement from the nut. The opposite end of the pins 5 are passed through the washer 6 and suitably headed up to prevent dsengagement therefro m.

Slidably mounted in diagonal g'rooves 8 Specification of Letters Patent.

Application filed March 9, 1912.

Patented Jan. 21, 1913.

Serial No. 682,579.

disposed radially and at an incline to the aXis of the bolt are looking; pins 9 which are forced into engagement with the threads of the bolt when the nut is clamped upon the washer 6. The washer rotates with the nut but is capable of moving' toward and away from the same, as will be readily understood. When the washer is jammed upon the nut by reason of the same being clanped between the nut and the support, 10, the pins 9 will be forced into engagement with certain of the threads of the bolt and the nut held against rotation.

What is claimed is 1. In combination, a threaded bolt, a nut threaded thereon, diagonally extending pins loosel; mounted in the nut, and a washer connected to rotate with the bolt, said washer adapted to force the pins into engagenent with the threads of the bolt, when the nut is screwed down upon the same.

2. In conbination a threaded bolt, a nut threaded thereon, diagonally extending pins loosely nounted in the nut, a washer surrounding* the bolt, and pins carried by the washer and slidably mounted in the nut for holding said washer against rotation independent of the nut, said washer adapted to force the looking pins into engagement with the threads of the bolt when the nut is screwed up thereon.

In testimony whereof I aiiix my signature in presence of two witnesses.

' DAVID S. MARPLE.

VVitnesses S. P. CRAMPTON, W. E. CRAMPTON.

Copies of this patent may be obtained for five cents each, by addressing the Commssioner of Patents. Washington, D. G. 

